Percent change in energy for change in wind speed by Jon Boone This spreadsheet shows what a windplant rated at 200MW must do at each wind speed interval throughout a windplant's permissible wind speed range of 8 to about 33 mph. The main driver is the 3 third power of the wind speed. The electrical grid's prime mission is to precisely match supply to demand at all times. If wind produced at a steady rate whenever it did produce and despite its utter unpredictability and relentless intermittence, it might do some good. It is wind's continuous skitter that is its poison pill, always subverting the grid's prime mission, always requiring firm capacity entanglement to inefficiently ebb and flow to cover the skitter. And the more wind, the more the difficulty with integrating it. Wind Speed (MPH) 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
Corresponding Corresponding Power Inc. % Power Inc. % Based on 8 based on MPH previous MPH N/A N/A 42% 42% 95% 37% 160% 33% 238% 30% 329% 27% 436% 25% 559% 23% 700% 21% 860% 20% 1039% 19% 1240% 18% 1463% 17% 1709% 16% 1980% 15% 2276% 14% 2600% 14% 2952% 13% 3333% 12% 3744% 12% 4188% 12% 4663% 11% 5173% 11% 5719% 10% 6300% 10% 6919% 10%
Example of 200MW 2.84943 4.1 5.6 7.4 9.6 12.2 15.3 18.8 22.8 27.3 32.5 38.2 44.5 51.5 59.3 67.7 76.9 87.0 97.8 109.5 122.2 135.7 150.3 165.8 182.4 200.0
Wind Speed (MPH) 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8
Corresponding Corresponding Power Dec. % Power Dec. % Example Based on 33 based on of MPH previous MPH 200MW N/A N/A 200.0 -9% -9% 182.4 -17% -9% 165.8 -25% -9% 150.3 -32% -10% 135.7 -39% -10% 122.2 -45% -10% 109.5 -51% -11% 97.8 -57% -11% 87.0 -62% -12% 76.9 -66% -12% 67.7 -70% -12% 59.3 -74% -13% 51.5 -78% -14% 44.5 -81% -14% 38.2 -84% -15% 32.5 -86% -16% 27.3 -89% -17% 22.8 -91% -18% 18.8 -92% -19% 15.3 -94% -20% 12.2 -95% -21% 9.6 -96% -23% 7.4 -97% -25% 5.6 -98% -27% 4.1 -99% -30% 2.84943